Siemens SIMATIC ET 200iSP User Manual

Analog electronic modules
14
14.1 Behavior of the analog modules during operation and in the event
of problems
In󹪞uence of the supply voltage and the operating state
The input and output values of the analog modules depend on the supply voltage for electronics/
encoder and on the operating state of the PLC (CPU of the DP master).
Table 14-1 Dependencies of the analog input/output values on the operating state of the PLC (CPU of the DP master) and the
supply voltage L +.
Operating state of the
PLC (CPU of the DP
master)
Supply voltage L +
on ET 200iSP
(power supply
module)
Input value of the electronic module
with analog inputs (evaluation in
CPU of the DP master possible).
Output value of the electronic mod‐
ule with analog outputs
S7 format
POWER ON RUN L + available Process values PLC values
7FFF
H
until the 1st conversion is com‐
pleted after switching on or after the
parameter assignment of the module.
Only to 1st value output:
• after switching on, a signal of 0 V is
output.
• depending on the parameter "CPU/
Master STOP".
POWER ON STOP L + available Process value depending on the parameter "CPU/
Master STOP".
L + missing 7FFF
H
-
In󹪞uence of the value range for the analog input
The behavior of the electronic modules with analog inputs depends on the part of the value
range in which the input values lie. The following table shows this dependency.
Table 14-2 Behavior of the analog modules depending on the position of the analog input value in the value range
Measured value in the input value in SIMATIC S7 format
Nominal range Measured value
Overrange/underrange Measured value
Over󹪞ow 7FFF
H
Under󹪞ow 8000
H
Until valid measured values are available 7FFF
H
ET 200iSP
Operating Instructions, 11/2022, A5E00247483-AK 345

Siemens SIMATIC ET 200iSP Specifications

General

Brand	Siemens
Model	SIMATIC ET 200iSP
Category	I/O Systems
Language	English